问题描述：

切换用户时，会出现红色部分的提示信息。有时候会影响之前脚本的正常运行，如何去掉它。

[root@rac1 ~]# su - oracle

http://www.cndba.cn/Expect-le/article/1817

Last login: Tue Mar 21 17:44:11 CST 2017

解决方法：

修改 /etc/pam.d/su文件

将红色部分注释掉即可http://www.cndba.cn/Expect-le/article/1817

[root@rac1 ~]# cat /etc/pam.d/suhttp://www.cndba.cn/Expect-le/article/1817

#%PAM-1.0

auth sufficient pam_rootok.sohttp://www.cndba.cn/Expect-le/article/1817

# Uncomment the following line to implicitly trust users in the "wheel" group.

#auth sufficient pam_wheel.so trust use_uid

# Uncomment the following line to require a user to be in the "wheel" group.

#auth required pam_wheel.so use_uidhttp://www.cndba.cn/Expect-le/article/1817

auth substack system-auth

auth include postlogin

account sufficient pam_succeed_if.so uid = 0 use_uid quiethttp://www.cndba.cn/Expect-le/article/1817http://www.cndba.cn/Expect-le/article/1817

account include system-authhttp://www.cndba.cn/Expect-le/article/1817

password include system-auth

session include system-auth

#session include postloginhttp://www.cndba.cn/Expect-le/article/1817

session optional pam_xauth.so

验证：

[root@rac1 ~]# su - oracle

[oracle@rac1 ~]$ 

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su last login